A SPIA is an income contract. The consumer pays a single premium to a life insurance carrier. The carrier returns a stream of payments. Payments can run for the consumer's lifetime, for a fixed period, or for a combination of both. Once issued, a SPIA is generally irrevocable. The premium cannot be withdrawn as a lump sum.
SPIA income is funded by three sources: the consumer's own premium, the carrier's investment yield on that premium, and mortality credits from contract owners who die earlier than the actuarial average. The mortality credit component is what makes SPIAs structurally distinct from a self-managed bond portfolio.
What is a SPIA
A single premium immediate annuity is a deferred-free annuity contract. The consumer pays a single premium. The carrier begins paying periodic income, typically monthly, within 12 months of the issue date. Payments continue according to the chosen payout structure.
SPIAs are sometimes called immediate annuities, life annuities, or income annuities. The defining trait is that income begins immediately and the contract has no accumulation phase.
How a SPIA works
The consumer chooses the premium amount, the payout type (described below), and the start date. The carrier provides a quote showing the guaranteed monthly income amount. Once accepted and funded, the contract is generally irrevocable. Payments begin on the elected start date.
The carrier invests the premium primarily in investment-grade fixed-income securities matched to the expected payout stream. The payment amount is calculated using actuarial life expectancy tables, the carrier's portfolio yield, and the chosen payout structure.
Payout types
The payout type determines how long the SPIA pays and what happens at death.
Life only (single life)
Pays income for the lifetime of one annuitant. Payments stop at death. This is the highest-paying option because the carrier expects no payments after the annuitant dies. It is also the highest risk to heirs: if the annuitant dies shortly after issue, the carrier keeps the remaining premium.
Life with period certain
Pays income for the lifetime of the annuitant or for a guaranteed minimum number of years, whichever is longer. Common period certain lengths are 10, 15, or 20 years. If the annuitant dies before the period ends, the remaining guaranteed payments go to a beneficiary. Payments are lower than life-only because of the guarantee.
Joint and survivor
Pays income for two lives, typically spouses. Payments continue at full level until both annuitants have died. Many joint contracts include a survivor reduction: payments drop to 50%, 66.67%, or 75% at the first death. Joint and survivor payments are lower than single-life because the carrier expects payments to continue longer on average.
Period certain only
Pays income for a fixed period (5, 10, 20 years) regardless of whether the annuitant is living. Functions like a fixed-rate income stream rather than a mortality-based contract. No mortality credits are involved.
Cash refund and installment refund
Pays income for life, and at death, the carrier pays the difference between the original premium and the total payments received to a beneficiary. Cash refund pays the difference in a lump sum. Installment refund continues the regular payments until the original premium is fully returned. Both reduce the monthly payout compared to life-only.
Mortality credits
Mortality credits are the central feature of a life-payout SPIA. The carrier prices the contract assuming the annuitant lives to the actuarial life expectancy. Some annuitants will die earlier than that average. Some will live longer. The premiums of those who die earlier subsidize the continued payments to those who live longer.
The effect of mortality credits compounds with age. The older the annuitant at issue, the larger the mortality credit component of each payment. A 75-year-old SPIA pays substantially more per dollar of premium than a 65-year-old SPIA. A 85-year-old SPIA pays more still.
This is why SPIAs are difficult to replicate with a bond ladder. A bond ladder pays interest and returns principal but does not include mortality credits. A retiree who lives substantially longer than the actuarial average receives more lifetime income from a SPIA than from an equivalent self-managed portfolio.
Rate environment matters
SPIA payouts are sensitive to the interest rate environment. When long-term Treasury yields are higher, carriers can offer higher payouts. When yields are lower, payouts decline. Locking in a SPIA when long-term yields are high produces higher lifetime income than locking in when yields are low.
A SPIA bought today is priced against today's yield curve and today's actuarial tables. The carrier cannot raise or lower the payment after issue.
Tax treatment
Tax treatment depends on whether the SPIA is funded with qualified or non-qualified money.
- Non-qualified SPIA. Each payment is split into two parts: a return of premium (not taxed) and an interest portion (taxed as ordinary income). The split is set by the exclusion ratio, calculated at issue. The exclusion ratio applies until the original premium has been fully recovered. After that, the full payment is taxable.
- Qualified SPIA (funded with IRA, 401(k), or other pre-tax money). The full payment is taxable as ordinary income.
Carrier financial strength
A SPIA is a long-duration promise from a single carrier. The consumer is exposed to the carrier's ability to pay for the entire remaining life of the contract. Financial strength ratings (A.M. Best, S&P, Moody's, Fitch) are the standard reference. State guaranty associations provide a second layer of protection but with limits that vary by state and may not cover the full premium for large contracts.
For consumers placing a large premium with a single carrier, dividing the premium across two or three highly rated carriers reduces concentration risk.
Comparing quotes
SPIA quotes from different carriers for the same age, sex, and premium can vary by 5% to 15%. The quote variation comes from carrier-specific differences in mortality assumptions, expense loadings, and portfolio yield.
An apples-to-apples comparison requires matching the payout type exactly: same start date, same period certain length, same survivor benefit, same refund feature. Even minor changes in those features change the payment amount.
Quotes are valid for a short window, typically 7 to 14 days. After that window, the carrier may re-quote at a different rate.
When a SPIA fits
- The consumer wants guaranteed lifetime income beginning soon.
- The consumer is at or past traditional retirement age (mortality credits compound with age).
- The consumer prioritizes longevity protection over the option to leave a large lump sum to heirs.
- The consumer wants to cover essential expenses with guaranteed income separate from market exposure.
- The consumer is delaying Social Security and needs bridge income.
When a SPIA does not fit
- The consumer may need access to the principal for emergencies or large expenses.
- The consumer is in poor health with significantly below-average life expectancy.
- The consumer prioritizes leaving the full lump sum to heirs.
- The consumer is shopping the SPIA in a low-rate environment and can afford to defer the purchase.
Frequently asked questions
Can a SPIA be cancelled?
Most states require a "free look" period after issue (typically 10 to 30 days) during which the contract can be cancelled for a full refund. After the free look period, SPIAs are generally irrevocable. Some carriers offer a commutation feature that allows the present value of remaining guaranteed payments to be taken as a lump sum, but life-payout components cannot be commuted.
What happens if the carrier becomes insolvent?
State guaranty associations cover annuity contracts up to defined limits, typically $100,000 to $500,000 of present value per contract per carrier. The limits vary by state. Consumers with SPIAs above the guaranty limit should consider splitting across multiple carriers.
Can a SPIA include inflation adjustments?
Some carriers offer cost-of-living adjustments (COLA) or step-up provisions that increase the payment annually by a fixed percentage (commonly 1% to 3%). The initial payment is lower than a level SPIA. The breakeven point is typically 10 to 15 years into the contract.
Is a SPIA the same as annuitizing a deferred annuity?
The structures are similar. A SPIA is issued specifically to begin income immediately. An accumulated deferred annuity can be annuitized (converted to a stream of payments) at any time. Carrier annuitization rates may differ from new-issue SPIA rates, so consumers should compare both options at the point of converting.
Why does a SPIA at 75 pay so much more than at 65?
Mortality credits. A 75-year-old has a shorter expected lifespan than a 65-year-old. The carrier expects to make fewer payments per dollar of premium. Per-payment amount is therefore higher. The trade is that fewer total payments are expected.
Sources
- National Association of Insurance Commissioners
- Social Security Administration Period Life Tables
- Federal Reserve Economic Data (FRED)
- NOLHGA, state guaranty association coverage limits
- Individual carrier SPIA quote sources and product brochures
This page is educational. SPIA payouts vary materially by carrier, date, age, sex, and payout structure. Quotes change daily. Confirm specific terms with the carrier or a licensed advisor before purchase. AnnuityMatchPro is not a registered investment adviser and is not a licensed insurance agency.
Related
- Deferred Income Annuities, the deferred-start sibling of the SPIA
- Immediate Annuity Calculator, estimate monthly income from a lump sum
- Life Expectancy Calculator, baseline for sizing a SPIA
- Glossary: Exclusion Ratio
- Glossary: Period Certain